# scala/scala3

The Scala 3 compiler, also known as Dotty.

Repository: https://github.com/scala/scala3
Canonical: https://ross.abutalabs.com/products/scala3
Homepage: https://scala-lang.org
Language: Scala
License: Apache-2.0
License Family: permissive
Topics: scala, scala3, epfl, compiler, dotty
Last push: 2026-08-26T22:36:26+00:00

## Health v2 (maintenance only)
Score: 91/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 76, longevity 100
- inputs: {"age_days": 5018, "days_push": 7, "days_rel": 83, "gap_med": 33, "n_releases_24m": 20}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 6296, forks 1174 (observed 2026-08-28T04:09:41.518746+00:00)

## What it is
The Scala 3 compiler (Dotty), along with the Scala 3 standard library and language specification. It compiles Scala 3 source code to JVM bytecode and defines the Scala 3 language.

## Use cases
- compile scala 3 code
- learn the scala programming language
- migrate a project from scala 2 to scala 3
- build functional programs on the jvm
- contribute to the scala compiler
- read the scala 3 language specification

## When to choose
- you are writing or compiling Scala 3 applications
- you want the reference implementation of the Scala 3 language
- you need the official Scala standard library and language spec

## When to avoid
- you need a Scala 2-only toolchain (use the Scala 2 compiler)
- you want a build tool rather than a compiler (use sbt or mill)
- you need a JVM-independent language runtime

## Facets
- artifact type: cli-tool
- maturity: stable
- function: compiler, programming-language, interpreter, developer-tools
- domain: programming-languages, compilers, developer-tools, cross-platform
- platform: jvm, windows, cli, cross-platform
- tags: scala, scala3, dotty, jvm-languages, functional-programming, type-system, language-spec, standard-library, linux, macos

## Member repositories
- scala/scala3 (main) score 91

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:41.518746+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:46:17.050163+00:00, confidence not recorded.
  - readme: https://github.com/scala/scala3 (fetched 2026-08-28T04:09:41.518746+00:00, sha 0b331736bd82)
  - homepage: https://scala-lang.org (fetched 2026-08-29T08:42:52.533718+00:00, sha 5ee62b9cf604)
  - site_page: https://docs.scala-lang.org/getting-started.html (fetched 2026-08-29T08:42:52.546340+00:00, sha 13d04ca15538)
  - site_page: https://docs.scala-lang.org (fetched 2026-08-29T08:42:52.551397+00:00, sha 22e769ff53d3)
  - site_page: https://docs.scala-lang.org/api/all.html (fetched 2026-08-29T08:42:52.554129+00:00, sha 7115cd1714a3)
  - site_page: https://scala-lang.org/download (fetched 2026-08-29T08:42:52.543076+00:00, sha 4694976018d0)
  - site_page: https://scala-lang.org/download/all.html (fetched 2026-08-29T08:42:52.544852+00:00, sha c98ace04d061)
- Data as of 2026-08-30T08:39:29.467469+00:00.